package app.project.streetlensproject.util;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.Socket;
import java.net.URI;
import java.net.UnknownHostException;
import java.security.KeyManagementException;
import java.security.KeyStore;
import java.security.KeyStoreException;
import java.security.NoSuchAlgorithmException;
import java.security.UnrecoverableKeyException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;

import org.apache.http.HttpResponse;
import org.apache.http.HttpVersion;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ClientConnectionManager;
import org.apache.http.conn.params.ConnManagerParams;
import org.apache.http.conn.scheme.PlainSocketFactory;
import org.apache.http.conn.scheme.Scheme;
import org.apache.http.conn.scheme.SchemeRegistry;
import org.apache.http.conn.ssl.SSLSocketFactory;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.conn.tsccm.ThreadSafeClientConnManager;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;
import org.apache.http.params.HttpProtocolParams;
import org.apache.http.protocol.HTTP;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;

public class CustomHttpClient {
	/** The time it takes for our client to timeout */
	public static final int HTTP_TIMEOUT = 15 * 1000; // milliseconds

	/** Single instance of our HttpClient */
	private static DefaultHttpClient mHttpClient;

	/**
	 * Get our single instance of our HttpClient object.
	 * 
	 * @return an HttpClient object with connection parameters set
	 */
	private static DefaultHttpClient getHttpClient() {
		if (mHttpClient == null) {
			mHttpClient = new DefaultHttpClient();
			final HttpParams params = mHttpClient.getParams();
			HttpConnectionParams.setConnectionTimeout(params, HTTP_TIMEOUT);
			HttpConnectionParams.setSoTimeout(params, HTTP_TIMEOUT);
			ConnManagerParams.setTimeout(params, HTTP_TIMEOUT);
		}
		return mHttpClient;
	}

	/**
	 * Performs an HTTP Post request to the specified url with the specified
	 * parameters.
	 * 
	 * @param url
	 *            The web address to post the request to
	 * @param postParameters
	 *            The parameters to send via the request
	 * @return The result of the request
	 * @throws Exception
	 */
	public static String executeHttpPost( String url,
			ArrayList<NameValuePair> postParameters) throws Exception {
		BufferedReader in = null;
		try {
			DefaultHttpClient client = getHttpClient();
			HttpPost request = new HttpPost(url);

			UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(
					postParameters);
			request.setEntity(formEntity);
			HttpResponse response = client.execute(request);

			in = new BufferedReader(new InputStreamReader(response.getEntity()
					.getContent()));

			StringBuffer sb = new StringBuffer("");
			String line = "";
			String NL = System.getProperty("line.separator");
			while ((line = in.readLine()) != null) {
				sb.append(line + NL);
			}
			in.close();

			String result = sb.toString();
			return result;
		} catch(Exception e){
			e.printStackTrace();
			return null;
		}finally {
			if (in != null) {
				try {
					in.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
	}

	/**
	 * Performs an HTTP GET request to the specified url.
	 * 
	 * @param url
	 *            The web address to post the request to
	 * @return The result of the request
	 * @throws Exception
	 */
	public static String executeHttpGet( String url)
			throws Exception {
		BufferedReader in = null;
		try {
			HttpClient client = getHttpClient();
			HttpGet request = new HttpGet();
			request.setURI(new URI(url));
			HttpResponse response = client.execute(request);
			in = new BufferedReader(new InputStreamReader(response.getEntity()
					.getContent()),8192);

			StringBuffer sb = new StringBuffer("");
			String line = "";
			String NL = System.getProperty("line.separator");
			while ((line = in.readLine()) != null) {
				sb.append(line + NL);
			}
			in.close();

			String result = sb.toString();
			return result;
		}catch(Exception e){
			e.printStackTrace();
			return null;
		}finally {
			if (in != null) {
				try {
					in.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
	}

	public static Bitmap handleResponseInternal(String url) throws IOException {
		try {
			HttpClient client = getHttpClient();
			HttpGet request = new HttpGet();
			request.setURI(new URI(url));
			HttpResponse response = client.execute(request);

			InputStream inputStream = response.getEntity().getContent();
			// decode image size
			BitmapFactory.Options option = new BitmapFactory.Options();
			option.inSampleSize = 2;
			Bitmap b = BitmapFactory.decodeStream(inputStream, null, option);
			return b;
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}
	
	public static class MySSLSocketFactory extends SSLSocketFactory {
	    SSLContext sslContext = SSLContext.getInstance("TLS");

	    public MySSLSocketFactory(KeyStore truststore) throws NoSuchAlgorithmException, KeyManagementException, KeyStoreException, UnrecoverableKeyException {
	        super(truststore);

	        TrustManager tm = new X509TrustManager() {
	            public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
	            }

	            public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
	            }

	            public X509Certificate[] getAcceptedIssuers() {
	                return null;
	            }
	        };

	        sslContext.init(null, new TrustManager[] { tm }, new java.security.SecureRandom());
	        HttpsURLConnection.setDefaultSSLSocketFactory(sslContext.getSocketFactory());
	    }

	    @Override
	    public Socket createSocket(Socket socket, String host, int port, boolean autoClose) throws IOException, UnknownHostException {
	        return sslContext.getSocketFactory().createSocket(socket, host, port, autoClose);
	    }

	    @Override
	    public Socket createSocket() throws IOException {
	        return sslContext.getSocketFactory().createSocket();
	    }
	}

	public static HttpClient getNewHttpClient() {
	    try {
	        KeyStore trustStore = KeyStore.getInstance(KeyStore.getDefaultType());
	        trustStore.load(null, null);

	        SSLSocketFactory sf = new MySSLSocketFactory(trustStore);
	        sf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER);

	        HttpParams params = new BasicHttpParams();
	        HttpProtocolParams.setVersion(params, HttpVersion.HTTP_1_1);
	        HttpProtocolParams.setContentCharset(params, HTTP.UTF_8);

	        SchemeRegistry registry = new SchemeRegistry();
	        registry.register(new Scheme("http", PlainSocketFactory.getSocketFactory(), 80));
	        registry.register(new Scheme("https", sf, 443));

	        ClientConnectionManager ccm = new ThreadSafeClientConnManager(params, registry);

	        return new DefaultHttpClient(ccm, params);
	    } catch (Exception e) {
	        return new DefaultHttpClient();
	    }
	}
	
	public static String executeHttpsPost(String url, ArrayList<NameValuePair> postParameters) throws Exception {
		
		BufferedReader in = null;
		try {
			HttpClient client = getNewHttpClient();
			HttpPost request = new HttpPost(url);

			UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(
					postParameters);
			request.setEntity(formEntity);
			HttpResponse response = client.execute(request);

			in = new BufferedReader(new InputStreamReader(response.getEntity()
					.getContent()));

			StringBuffer sb = new StringBuffer("");
			String line = "";
			String NL = System.getProperty("line.separator");
			while ((line = in.readLine()) != null) {
				sb.append(line + NL);
			}
			in.close();

			String result = sb.toString();
			return result;
		} catch(Exception e){
			e.printStackTrace();
			return null;
		}finally {
			if (in != null) {
				try {
					in.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
		
		
	}

}